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Novel square pyramidal iron(III) complexes of linear tetradentate bis(phenolate) ligands as structural and reactive models for intradiol-cleaving 3,4-PCD enzymes: Quinone formation vs. intradiol…
TLDR
In DMF/piperidine the amount of quinone product decreases and those of the cleavage products increase illustrating that the stronger base piperidine enhances the concentration of the catecholate adduct, and the rates of both dioxygenation and quin one formation observed inDMF/Et(3)N solution.
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Amphoteric reactivity of metal–oxygen complexes in oxidation reactions
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A Manganese(V)-Oxo Complex: Synthesis by Dioxygen Activation and Enhancement of Its Oxidizing Power by Binding Scandium Ion.
TLDR
This study reports the first example of tuning the second coordination sphere of high-valent metal-oxo species by binding a redox-inactive metal ion at the supporting ligand site, thereby modulating their electron-transfer properties as well as their reactivities in oxidation reactions.
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Nickel(II) complexes of pentadentate N5 ligands as catalysts for alkane hydroxylation by using m-CPBA as oxidant: a combined experimental and computational study.
TLDR
Both the catalytic activity and the selectivity decrease in the new nickel(II) complexes catalyze the oxidation of cyclohexane in the presence of m-CPBA as oxidant up to a turnover number of 530 with good alcohol selectivity.
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Development of proficient photocatalytic systems for enhanced photocatalytic reduction of carbon dioxide
Global warming due to the unrestricted release of CO2 into the atmosphere is a prevalent challenge faced by the 21st century.
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Selective Oxygenation of Cyclohexene by Dioxygen via an Iron(V)-Oxo Complex-Autocatalyzed Reaction.
TLDR
It is shown that an iron(III) complex with a tetraamido macrocyclic ligand is an efficient catalyst for the allylic oxidation of cyclohexene via an autocatalytic radical chain mechanism and that [(TAML)FeV(O)]- acts as a reactive intermediate for the selective oxygenation of cyclehexene with O2 to produce cyclo hex-2-enone predominantly.
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Mixed ligand nickel(II) complexes as catalysts for alkane hydroxylation using m-chloroperbenzoic acid as oxidant
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Redox Reactivity of a Mononuclear Manganese-Oxo Complex Binding Calcium Ion and Other Redox-Inactive Metal Ions.
TLDR
Contrary effects of M n+ on the reactivity of 1-M n+ in redox reactions such as electron-transfer (ET), oxygen atom transfer (OAT), and hydrogen atomtransfer (HAT) reactions are observed; cytochrome P450 utilizes the axial thiolate ligand to increase the basicity of the iron-oxo moiety, which enhances the reactsivity of compound I in C-H bond activation reactions.
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Tuning the olefin epoxidation by manganese(III) complexes of bisphenolate ligands: effect of Lewis basicity of ligands on reactivity.
TLDR
The present complexes act as better chemoselective catalysts for epoxidation of cyclohexene and styrene rather than cyclooctene.
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Biomimetic iron(III) complexes of N3O and N3O2 donor ligands: protonation of coordinated ethanolate donor enhances dioxygenase activity.
TLDR
Interestingly, the adducts of iron(III) complexes of bis(pyridyl)-based ligands afford higher amounts of intradiol-cleavage products, whereas those of mono/bis(imidazole)- based ligands (4,5) yield mainly the auto-oxidation product benzoquinone.
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